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Maharashtra State BoardSSC (English Medium) 8th Standard

Expand. (9x − 5t) (9x + 3t) - Mathematics

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Question

Expand.

(9x − 5t) (9x + 3t)

Sum
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Solution

(9x − 5t) (9x + 3t)

= (9x)2 + {(−5t) + (3t)} (9x) + (−5t) × (3t)

= 81x2 + (−2t) (9x) − 15t2

= 81x2 − 18xt − 15t2

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Chapter 5: Expansion formulae - Practice Set 5.1 [Page 24]

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Balbharati Mathematics [English] Standard 8 Maharashtra State Board
Chapter 5 Expansion formulae
Practice Set 5.1 | Q 6 | Page 24
Balbharati Mathematics Integrated [English] Standard 8 Maharashtra State Board
Chapter 5 Expansion formulae
Practice Set 5.1 | Q 1. (6) | Page 63
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